Pressure-fluid-actuated tool



mm Amm/? Hilf s W. H. KELLER PRESSURE FLUID AGTVUATED TOOL -Fled March 15, 1920 JN w mi# l Vfl;

Patented Feb. 12, 1924.

UNTE STATES 1,483,180 PATENT oEFicE.

WILLIAM LI. KELLER, or GRAND HAVEN, MICHIGAN, AssIeNoa rro WILLIAMV 1I. KELLER, INC., `or GRAND HAVEN, MICHIGAN, E CORPORATION or MICHIGAN.

PRESSURE-FLUIDACTUATED TOOL.

Application filed March 15, 1920. Serial No. 365,787.

To LZ/Z lwhom t 'may concern.:

Be it known that I, WILLIAM H. KELLER, a citizen of the United States, residing at Grand Haven, in the county of Ottawa and 5 State of Michigan, have invented certain new and useful Improvements in Pressure- F luid-Actuated Tools, of which the followingr` is a specification.

The invention relates to pressure-Huid actuated tools of the type comprisinga cylinder having` a handle detachably secured on its rear end., a reciprocatory member such as a piston, and valve mechanism for con- `trolling the movements of the piston.

The object of the invention is to provide means of advantageous construction for securing the handle to the cylinder, such means embodying an annular member or 'clip also adapted to serve as an exhaust deflector for the pressure fluid discharging from the cylinder, the aim being to simplify the tool by eliminating parts commonly employed in the art, .without impairing the ei'iiciency of the toolin any respect.

The object of the invention thus generally stated, may be attained by the construction and arrangement illustrated in the accompanying drawings, wherein I have shown my invention applied to a pneumatic hammer. Figure 1 is an elevational view partly in section of atool embodying my invention. Fig. 2is a transverse section taken on line 2-2 of Fig. 1. Fig. 3 is a fragmentary -enlarged elevation, the annular member or clip being removed. Fig. 4 is a detached sectional view of said clip.

The tool to which the invention is herein shown as applied comprises a cylinder 7 having a handle 8 on its rear end, and within the cylinder is a piston 9 which is arranged to be reciprocated into operative engagement with a rivet set 10 mounted in the forward end of the cylinder. Suitable valve mechanism (not shown) is employed for e5 controlling the movements of the piston in the usual way, pressure fluid being adapted to exhaust from the cylinder to the atmosphere through a plurality of exhaust passages 11. These passages are formed in the rear end of the cylinder and discharge from the cylinder a short distance forwardly of the rear end thereof, as at 12.

The handle 8 comprises the usual rear hand portion 80L and the forward tubular portion 8* which is internally threaded and adapted tor engage with the externally threaded rear end of the cylinder. To lock the handle against unscrewing, while `the tool is being used7 I provide a locking pin 13 adapted to be entered in one of a series of openings or holes 111 in the cylinder while engagingl in one of a series of openings or notches 15 in the forward end of the handle. An annular member or clip 1 6serves to retain said pin in position as well as to form an exhaust chamber 17 into which the exhaust passage 11 is adapted to discharge. As will be understood, the openings 14 and notches 15 are so arranged with reference to each other as to provide a plurality of different combinations ofholes and notches for receiving the pin 13 which is thus made capable of locking the handle in various positions of adjustment circumferentially of the cylinder. If desired, the pin may be made angular in form, the'upper horizontally extending portion beingfadapted to lie in the notches 15. This construction enables the easy removal of the pin when desired, by the use of a suitable tool. V

The annular member 16 is made of sufficient length to bridge the handle and the cylinder. The rear end is thus enlarged and fits neatly in an annular notch or rabbet groove 18 formed in the forward end of the handle, and at its forward end it is restricted in diameter so as to fit snugly over the cylinder forwardly of the exhaust discharge ports 12. 'The member is so shaped that it forms between the forward end of the handle and the cylinder the annular chamber 17 into which the exhaust ports discharge. At its rear end the member has an inturned peripheral fiange 19 adapted to engage in an annular groove 2O in the handle to hold the member in operative position. To permit of the escape of the ex* haust fluid from the chamber 17, the meinber 16 is provided with a series of openings 21 located circumferentially thereof and near its forward end.

To facilitate the removal of the member 16 from the cylinder, it is cut or slit longitudinally thereof as at 22 (Fig. 4) so that by the use of a suitable tool the retaining member may be readily forced out of its groove 20 and mov-ed forwardly over the. cylinder a suilicient distance to permit the removal of the pin 13. 'While the parts of the tool are disassembled the annular memgli..

ber 16 may be permitted to remain upon the cylinder forwardly of its rear end.

It will be seen that I have provided an improved tool by reason of thepfact that a single member is made Vto perform the function formerly requiring the use of two rmembers,-namely that of a retainer and that of an exhaust deflector. rI his not only results in a cheaper constructionbut simpliies the assembling operation and avoids the possi.-

` bilityL of the extra part working loose or becoming disarranged or otherwise ineifective. v

While the invention is illustrated and described hereinfwith reference to a pneumatic hammer, it lwillbe seen that it is readily applicable to other tools of this general nature.

I claimas my invention:

l. A pressure-fluid actuatedtool comprising, in combination, a cylinder, a handle screw-threaded on'the rear end of the cylinder, and means for locking the handle upon'the cylinder comprising a locking pin, said. cylinder and handle ,having openings adapted to receive said pin, andan annular member `surrounding the handle and cylinder and arranged to retain said pin in operative position, said member forming with the handle and cylinder an annular chamber and having openings therein 'leading from the chamber to the atmosphere, and

said-cylinder having one or more exhaust passages discharging into said chamber.

A' pressure-Huid-actuated `tool comprising, in combination', a cylinder, a handle ontherear end of' said cylinder, and means for detachably lockingsaid handle in position including alocking pin arranged to cooperatively engage? with the cylinder and handle, and an annular member arranged to coact withsaid pinandihandle'to hold the pin in locking position, said cylinder having an eXhaust passage discharging adjacent the forward end of the handle and said annular member being arranged to extend over the discharge outlet of said passage to deflect the exhaust of pressure fluid therefrom.

3. A pressurefluid-actuated tool comprising, in combination',y a cylinder, a handle on the rear end ot the cylinder, and means for locking the handle to the cylinder including a locking pin co-operatively engaging withcthey cylinder and handle, and a retaii'iingl member for said pin, said cylinder having an exhaust passage with a discharge outlet near the rear end of the cylinder and said retaining member being adapted` to overlie said discharge outlet Voi: the `exhaust passage.

4. A. pressure-fluid-actuated tool comprising, in combination, a cylinder, a handle screw-threaded upon the rear end of the cylind/er, and means for locking the handle against unscrewing comprising a locking pin, there being a series of notches in the forward end ot the handle and a series of holes in the cylinder, certain of said holes and notches being arranged to register when thehandle is in its proper position with yreference tothe cylinder whereby to receive said locking pin, and a retaining member for said pin in the form `of a spring clip adapted to operatively engage with the handle.

5. In a pressure-luid-actuated tool having an exhaust passage with the `discharge,

outlet opening into said chamber.I

In testimony whereof, I have hereunto set my hand.

WILLIAM I-I. KELLER. 

